{"id":"8bde575e-569f-4ea5-b870-17a94ffcfd67","shortId":"46em6L","kind":"x402","title":"Pay-per-call audit log access on Base via x402, settled in USDC at $0.02/request.","tagline":"Pay-per-call audit log access on Base via x402, settled in USDC at $0.02/request.","description":"This endpoint at lowpaymentfee.com provides access to audit log data (specifically log ID 91) via the x402 payment protocol. It is part of a broader platform offering dozens of pay-per-request API endpoints spanning data analytics, AI/ML inference, finance/Web3 data, and infrastructure utilities — all priced at $0.02 per request and settled in USDC on the Base network.\n\nThe specific resource `/api/v1/audit/logs/91` is labeled \"Premium API Access\" in the x402 challenge. The endpoint accepts POST requests and returns JSON. Payment is handled inline: callers attach an X-PAYMENT header containing a signed USDC payment of up to 20,000 base units (i.e., $0.02, since USDC uses 6 decimals) to the payTo address on Base. No API keys, rate limits, or upfront commitments are required.\n\nDocumentation on the site is extremely thin — the docs, pricing, API, and README pages all render only a \"Connect wallet\" prompt with no additional content. There is no OpenAPI spec, no request/response schema, and no usage examples available from the crawled material. The exact shape of the audit log data returned is unknown. The platform appears to be a demonstration or early-stage x402 marketplace rather than a mature production API.","tags":[],"capabilities":["x402-payment","usdc-settlement","base-network","audit-logs","pay-per-request","no-api-key","json-response"],"categories":["data","infrastructure"],"synonyms":["audit log API","x402 API","pay-per-call API","USDC micropayment API","Base network API","lowpaymentfee","premium API access"],"warnings":["No OpenAPI spec or request/response schema available","Documentation pages (docs, pricing, API, README) all render only 'Connect wallet' with no content","The specific data returned by /api/v1/audit/logs/91 is completely undocumented","This endpoint path (audit/logs/91) does not appear in the site's own listed API catalog, raising questions about its intended use","Platform appears to be early-stage or a demo; production reliability is unknown"],"endpointUrl":"https://lowpaymentfee.com/api/v1/audit/logs/91","protocol":"x402","transport":"http","auth":{"type":"x402","details":[{"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","extra":{"name":"USD Coin","version":"2"},"payTo":"0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3","scheme":"exact","network":"base","mimeType":"application/json","resource":"https://lowpaymentfee.com/api/v1/audit/logs/91","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.250","qualityRationale":"The endpoint is live (402 challenge captured) and pricing is clear ($0.02 USDC on Base), but there is no OpenAPI spec, no request/response schema, no documentation beyond a wallet-connect prompt, and the purpose of 'audit/logs/91' is unexplained. This is effectively a stub 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'/request':17,34 '0.02':16,33,83,139 '000':135 '20':134 '6':143 '91':48 'Base network API' 'USDC micropayment API' 'accept':109 'access':7,24,40,102 'addit':184 'address':148 'ai/ml':73 'analyt':72 'api':68,101,152,171,232 'appear':216 'attach':120 'audit':5,22,42,208 'audit log API' 'audit-logs' 'avail':198 'base':9,26,92,136,150 'base-network' 'broader':59 'call':4,21 'caller':119 'challeng':106 'commit':158 'connect':179 'contain':126 'content':185 'crawl':201 'data':44,71,76,210 'decim':144 'demonstr':220 'doc':169 'document':161 'dozen':62 'earli':223 'early-stag':222 'endpoint':36,69,108 'exact':204 'exampl':197 'extrem':166 'finance/web3':75 'handl':117 'header':125 'i.e':138 'id':47 'infer':74 'infrastructur':78 'inlin':118 'json':114 'json-response' 'key':153 'label':99 'limit':155 'log':6,23,43,46,209 'lowpaymentfee' 'lowpaymentfee.com':38 'marketplac':226 'materi':202 'matur':230 'network':93 'no-api-key' 'offer':61 'openapi':189 'page':174 'part':56 'pay':2,19,65 'pay-per-cal':1,18 'pay-per-call API' 'pay-per-request':64 'payment':52,115,124,130 'payto':147 'per':3,20,66,84 'platform':60,215 'post':110 'premium':100 'premium API access' 'price':81,170 'product':231 'prompt':181 'protocol':53 'provid':39 'rate':154 'rather':227 'readm':173 'render':176 'request':67,85,111 'request/response':192 'requir':160 'resourc':96 'return':113,211 'schema':193 'settl':12,29,87 'shape':205 'sign':128 'sinc':140 'site':164 'span':70 'spec':190 'specif':45,95 'stage':224 'thin':167 'unit':137 'unknown':213 'upfront':157 'usag':196 'usdc':14,31,89,129,141 'usdc-settlement' 'use':142 'util':79 'via':10,27,49 'wallet':180 'x':123 'x-payment':122 'x402':11,28,51,105,225 'x402 API' 'x402-payment'","prices":[{"id":"39867877-01d0-4300-b788-ba4d0bb0052a","listingId":"8bde575e-569f-4ea5-b870-17a94ffcfd67","amountUsd":null,"unit":"per_call","nativeCurrency":"USD COIN","nativeAmount":"20000","chain":"base","payTo":"0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3","paymentMethod":"x402-usd coin","isPrimary":true,"details":{"scheme":"exact","mime_type":"application/json","accepts_all":[{"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","extra":{"name":"USD Coin","version":"2"},"payTo":"0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3","scheme":"exact","network":"base","mimeType":"application/json","resource":"https://lowpaymentfee.com/api/v1/audit/logs/91","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:43:12.270Z"}],"sources":[{"listingId":"8bde575e-569f-4ea5-b870-17a94ffcfd67","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/audit/logs/91","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:43:12.270Z","lastSeenAt":"2026-04-27T05:04:23.829Z"}],"details":{"listingId":"8bde575e-569f-4ea5-b870-17a94ffcfd67","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/audit/logs/91 \\\n  -H \"Content-Type: application/json\" \\\n  -H \"X-PAYMENT: <signed-x402-payment-header>\"","exampleRequest":null,"exampleResponse":null,"schema":{"input":{"type":"http","method":"GET","discoverable":true}},"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"The endpoint returns a 402 challenge requesting USDC payment of up to 20,000 base units ($0.02) on Base network","source_url":"https://lowpaymentfee.com/api/v1/audit/logs/91"},{"claim":"The platform advertises $0.02/request pricing with no API keys, no rate limits, and instant access on Base network","source_url":"https://lowpaymentfee.com"},{"claim":"The USDC asset contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","source_url":"https://lowpaymentfee.com/api/v1/audit/logs/91"},{"claim":"Documentation, pricing, API, and README pages render only a 'Connect wallet' prompt","source_url":"https://lowpaymentfee.com/docs"}],"useCases":["Retrieving audit log entries on a per-request payment basis without API key registration","Demonstrating x402 payment protocol integration for agent-to-agent commerce","Accessing structured audit data programmatically with instant USDC micropayments"],"bestFor":["Developers experimenting with x402 payment protocol","Agents needing no-signup, pay-per-call data access","Projects requiring audit log retrieval without rate limits or subscriptions"],"notFor":["Production workloads requiring documented, stable API schemas and SLAs","Bulk audit log retrieval where per-request pricing is cost-inefficient","Users without a Base-network USDC wallet"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:14:27.979Z"},"updatedAt":"2026-04-27T05:04:23.829Z"}}